Mitsubishi MUZ-GB50VA- Manuals

5 OUTLINES AND DIMENSIONS 5 Unit: mm MUZ-GB50VA 30 - 35 - 155 90 198 40 515 299 66 34 51 330 360 850 430 500 80 121 840 Open as a rule500 mm or more ifthe front and bothsides are open 100 mm or more 200 mm or more if there are obstaclesto both sides Open as a rule500 mm or more if the back,both side...

WIRING DIAGRAM 6 6 MUZ-GB50VA R64B YLW 230V~ 12-24V CN912 CN663 WHT BLU NOISE FILTER P.C.BOARD BRN TO INDOOR UNIT CONNECTING RED S3 RT65 21 CN61 1 3 GRN/YLW 5 PFC GRN LD9 POWER BOARD RT64 2 1 CN3 RED WHT RS2 RS1 R64A RS3 RS4 F801 CN901 NR64 ELECTRONIC CONTROL P.C.BOARD CB1 CB2 CB3 HC930 IPM NF BLK B...

7 7 REFRIGERANT SYSTEM DIAGRAM MUZ-GB50VA- E1 Unit:mm Outdoor heat exchanger Flared connection Defrost thermistor RT61 Discharge temperature thermistor RT62 Flared connection Stop valve Stop valve(with service port) Capillary tube [ 3.6 ✕ [ 2.4 ✕ 50 Refrigerant flow in cooling Compressor 4-way valve...

8 ADDITIONAL REFRIGERANT CHARGE (R410A:g) Max. length A Max. Height difference B Indoorunit Outdoor unit MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE Max. length A 30 Max. Height difference B 15 Model Gas 12.7 Liquid 6.35 Piping size O.D : mm Refrigerant piping : m MUZ-GB50VA Model MUZ-...

9 PERFORMANCE CURVES 8 The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi-tions vary according to the areas where these units are installed, the following information has been provided to clarify theoperating characteristics ...

10 Indoor air Dry-bulb temperature difference ( : ) Indoor intake air Dry-bulb tem perature ( : ) Outdoor intake air Wet-bulb temperature ( : ) Outdoor intake air Wet-bulb temperature ( : ) Indoor intake air Dry-bulb temperature ( : ) 24.1 22.3 20.4 18.5 16.7 14.8 13.0 11.1 at Rated frequency MUZ-GB...

11 COOL operation 1 Both indoor and outdoor unit are under the same temperature/humidity condition. 2 Operation : TEST RUN OPERATION (refer to 8-3.) Dry-bulb temperature( : ) Relative humidity(%) 20 50 25 60 30 70 8-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT Ambient temperature(˚C) Ambient hum...

12 MSZ-GB50VA : MUZ-GB50VA 21 18 5.88 3.00 0.51 1320 5.63 2.87 0.51 1386 5.40 2.75 0.51 1452 5.20 2.65 0.51 1518 21 20 6.13 2.39 0.39 1386 5.88 2.29 0.39 1469 5.70 2.22 0.39 1502 5.50 2.15 0.39 1568 22 18 5.88 3.23 0.55 1320 5.63 3.09 0.55 1386 5.40 2.97 0.55 1452 5.20 2.86 0.55 1518 22 20 6.13 2.63...

14 PERFORMANCE DATA HEAT operation at Rated frequency CAPACITY:5.8(kW) INPUT:1700(W) OUTDOOR WB( : ) INDOOR -10 -5 0 5 10 15 20 DB( : ) Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 152126 3.65 1105 4.41 1326 5.16 1496 5.92 1615 6.67 1717 7.37 1768 8.12 1802 3.48 1190 4.18 1411 4.93 1564 5...

15 10 TROUBLESHOOTING 3. Troubleshooting procedure 1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality. To make sure, check how many times the abnormality indication is flashing on and off before starting service work. 2) Before servic...

18 OFF None (Normal) 2-time flash 3-time flash 4-time flash 5-time flash 6-time flash 7-time flash 8-time flash Lighting Lighting Lighting Once Lighting Once Lighting Twice Lighting 3 times Lighting 4 times Lighting 9 times Once Goes out Lighting Lighting Lighting Lighting 3 times Goes out 4 times G...

20 Start Indoor unit operates.Outdoor unit doesn't operate. Indoor unit doesn't receive the signal from remote controller. OPERATION INDICATORlamp on the indoorunit is flashing on and off. Outdoor unit operates onlyin Test Run operation. (Refer to 8-3.) w Outdoor unit doesn't operate even in Test Ru...

24 10-6. Troubleshooting flow MUZ-GB50VA A A How to check inverter/ compressor No No Yes Yes Yes No Yes No Disconnect the terminal of the compressor. 3 minutes after turning on the power supply, start EMERGENCY OPERATION. Is output balanced? Clarify the causes by counting time until the inverter sto...

25 B B Check of outdoor thermistors • When OPERATION INDICATOR lamp flashes 6-time.• When thermistor is abnormal. Yes Yes No No Reconnect the connector CN661, CN663 and CN3. 3 minutes after turning on the power supply, start EMERGENCY OPERATION. Defrost Discharge temperature Outdoor heat exchanger t...

28 Outdoor unit does not operate at all, or stops immediately due to overcurrent. F F Check of current-limiting resistor ● Check other electric parts in the main circuit together in the case that the current-limiting resistor is defective. Turn ON the powersupply and pressEMERGENCYOPERATION switch. ...

30 I I Electromagnetic noise enters into TV sets or radios Replace or repair the antenna.Replace or repair the coaxial cable. No No No Yes Yes No No Yes Yes Yes Is the distance between theantennas and the indoorunit within 3m, or is thedistance between theantennas and the outdoorunit within 3m? Is t...

33 MUZ-GB50VA 3. Outdoor power board 325-370V DCOutput (Red) (White) Connect to the compressorVoltage among phases: 5V to180V Connect to the earth CN5Primary current detection(Connect to the noise filter) CN2Connect to the controller board(+)1-5(–): Signal transmission (To electronic control P.C. bo...

34 DISASSEMBLY INSTRUCTIONS 11 (1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the locking mechanism. 1 Slide the sleeve. 2 Pull the terminal while pushing the locking lever. 1 Hold the sleeve, and pull out the terminal slowly. The terminal...

35 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board and power board (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel.(Refer to 1.)(3) Disconnect the following connectors; <Electronic control P.C. board>CN931 and CN932...

36 5. Removing outdoor fan motor (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel. (Refer to 1.)(3) Disconnect the following connectors; <Electronic control P.C. board>CN931 and CN932 (Fan motor) (4) Remove the propeller.(5) Remove the screws fixing ...

37 OPERATING PROCEDURE PHOTOS Photo 8 6. Removing the compressor and 4-way valve (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel. (Refer to 1.)(3) Remove the inverter assembly. (Refer to 2.)(4) Recover gas from the refrigerant circuit. NOTE: Recover gas f...

38 12 RoHS PARTS LIST (RoHS compliant) 4 17 1 12 9 11 2 5 6 7 8 15 13 18 20 21 22 23 27 28 29 3 10 14 16 19 26 25 24 MUZ-GB50VA12-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS OB455D--2qxp 07.9.3 5:24 PM Page 38

39 RoHS Symbol in Wiring Diagram Q'ty/unit Remarks Part No. No. Part Name MUZ-GB50VA - E1 E2 E12 819 297E12 851 630E12 938 301E12 851 501E12 851 290E12 819 232E12 819 009E12 819 521E12 C34 506E12 939 900E12 C06 900E12 851 661E12 821 662E12 851 640E12 851 493E12 935 490E12 891 961E12 819 650E12 819 2...